What is the size of Webb’s mirror?

01.

Webb’s segmented primary mirror has a diameter of 6.6 meters (21.7 feet). Each of the 18 segments is 1.32 meters (4.3 feet) across. The area of the mirror is approximately 25 square meters (270 square feet) and the mass is 705 kilograms (1,550 pounds on Earth)

How big is the Webb telescope

02.

The sunshield dimensions are 21.2 by 14.2 meters (69.5 by 46.5 feet) and the height of the entire observatory is 8 meters (28 feet).

Expected lifespan of the Webb telescope

03.

Webb is designed to have a minimum five years of science operations, with the goal of having an overall mission lifetime greater than 10 years.

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https://webbtelescope.org/

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Credits: JWST NASA, ESA, CSA

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Credits: JWST  NASA-GSFC

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Credits: NASA, ESA, CSA

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